How Do Viability Stains Usually Distinguish Between Living Cells and Dead

question 79

Multiple Choice

How do viability stains usually distinguish between living cells and dead cells?

• A) The chemical stain is taken up by living cells and once metabolized becomes fluorogenic.
• B) The dye specifically targets intact cytoplasmic membranes.
• C) The chemical fluoresces only when bound to ribosomes that are actively synthesizing proteins.
• D) The dye's fluorescence is quenched by dead cells.

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Definitions:

Clay Minerals

A group of hydrated silicates of aluminum, sometimes with iron, magnesium, or other cations, which possess fine-grained structures and are a major component of soils.

Plant Cover

The layer of vegetation or plants that covers the ground in a specific area, crucial for maintaining ecosystems and influencing water and soil quality.

Erosion

Erosion is the process by which natural forces like water, wind, ice, and gravity wear away rocks and soil, transporting them from one place to another.

Angle of Repose

The sharpest incline at which a specifically loose material remains stable without collapsing.